<template>
<div class="ebook-slide-contents">
  <div class="slide-contents-search-wrapper">
    <div class="slide-contents-search-input-wrapper">
      <div class="slide-contents-search-icon">
        <span class="icon-search"></span>
      </div>
      <input
        type="text"
        v-model="searchText"
        class="slide-contents-search-input"
        :placeholder="$t('book.searchHint')"
        @keyup.enter.exact="search"
        @click="showSearchPage"
      />
    </div>
    <div
      class="slide-contents-search-cancel"
      v-if="searchVisible"
      @click="hideSearchPage()"
    >{{ $t('book.cancel') }}</div>
  </div>
  <div class="slide-contents-book-wrapper" v-show="!searchVisible">
    <div class="slide-contents-book-img-wrapper">
      <img :src="cover" alt="" class="slide-contents-book-img">
    </div>
    <div class="slide-contents-book-info-wrapper">
      <div class="slide-content-book-title">
        <span class="slide-contents-book-title-text">{{ metadata.title }}</span>
      </div>
      <div class="slide-content-book-author">
        <span class="slide-contents-book-author-text">{{ metadata.creator }}</span>
      </div>
    </div>
    <div class="slide-contents-book-progress-wrapper">
      <div class="slide-contents-book-progress">
        <span class="progress">{{ progress }}%</span>
        <span class="progress-text">{{ $t('book.haveRead2') }}</span>
      </div>
      <div class="slide-contents-book-time">{{ getReadTimeText() }}</div>
    </div>
  </div>
  <scroll
    class="slide-contents-list"
    :top="156"
    :bottom="48"
    v-show="!searchVisible"
    ref="scroll"
  >
    <div class="slide-contents-item" v-for="(item, index) in navigation" :key="index">
      <span
        class="slide-contents-item-label"
        :class="{'selected': section === index }"
        :style="contentItemStyle(item)"
        @click="displayContent(item.href)"
      >{{ item.label }}</span>
      <span class="slide-contents-item-page">{{ item.page }}</span>
    </div>
  </scroll>
  <scroll
    class="slide-search-list"
    :top="66"
    :bottom="48"
    v-show="searchVisible"
  >
    <div
      class="slide-search-item"
      v-for="(item, index) in searchList"
      :key="index"
      v-html="item.excerpt"
      @click="displayContent(item.cfi, true)"
    ></div>
  </scroll>
</div>
</template>

<script>
import { ebookMixin } from '../../utils/mixin'
import Scroll from '../common/Scroll.vue'
import { px2rem } from '../../utils/utils'

export default {
  mixins: [ebookMixin],
  components: {
    Scroll
  },
  data () {
    return {
      searchVisible: false,
      searchList: null,
      searchText: ''
    }
  },
  methods: {
    search () {
      if (this.searchText && this.searchText.length > 0) {
        // console.log('search')
        this.doSearch(this.searchText).then(list => {
          this.searchList = list
          this.searchList.map(item => {
            item.excerpt = item.excerpt.replace(this.searchText, `<span class="content-search-text">${this.searchText}</span>`)
            return item
          })
        })
      }
    },
    doSearch (q) {
      return Promise.all(
        this.currentBook.spine.spineItems.map(
          item => item.load(this.currentBook.load.bind(this.currentBook))
            .then(item.find.bind(item, q))
            .finally(item.unload.bind(item)))
      ).then(results => Promise.resolve([].concat.apply([], results)))
    },
    displayContent (target, highlight = false) {
      this.display(target, () => {
        this.hideTitleAndMenu()
        if (highlight) {
          this.currentBook.rendition.annotations.highlight(target)
        }
      })
    },
    showSearchPage () {
      this.searchVisible = true
    },
    hideSearchPage () {
      this.searchVisible = false
      this.searchText = ''
      this.searchList = null
    },
    contentItemStyle (item) {
      return {
        marginLeft: `${px2rem(item.level * 15)}rem`
      }
    }
  }
}
</script>

<style lang='scss' scoped>
@import "../../assets/styles/global";
.ebook-slide-contents {
  width: 100%;
  font-size: 0;
  .slide-contents-search-wrapper {
    display: flex;
    width: 100%;
    height: px2rem(36);
    margin: px2rem(20) 0 px2rem(10) 0;
    padding: 0 px2rem(15);
    box-sizing: border-box;
    .slide-contents-search-input-wrapper {
      flex: 1;
      @include center;
      .slide-contents-search-icon {
        flex: 0 0 px2rem(28);
        font-size: px2rem(12);
        @include center;
      }
      .slide-contents-search-input {
        flex: 1;
        width: 100%;
        height: px2rem(32);
        font-size: px2rem(14);
        background: transparent;
        border: none;
        &:focus {
          outline: none;
        }
      }
    }
    .slide-contents-search-cancel {
      flex: 0 0 px2rem(50);
      font-size: px2rem(14);
      @include right;
    }
  }
  .slide-contents-book-wrapper {
    display: flex;
    width: 100%;
    height: px2rem(90);
    padding: px2rem(10) px2rem(15) px2rem(20) px2rem(15);
    box-sizing: border-box;
    .slide-contents-book-img-wrapper {
      flex: 0 0 px2rem(45);
      .slide-contents-book-img {
        width: px2rem(45);
        height: px2rem(60);
      }
    }
    .slide-contents-book-info-wrapper {
      flex: 1;
      padding: 0 px2rem(10);
      box-sizing: border-box;
      .slide-content-book-title {
        // 375*0.85=318.75-30=288.75-20=268.75-45=223.75-70=153.75
        // width: px2rem(153.75);
        font-size: px2rem(14);
        line-height: px2rem(16);
        @include left;
        .slide-contents-book-title-text {
          @include ellipsis2(3);
        }
      }
      .slide-content-book-author {
        // width: px2rem(153.75);
        font-size: px2rem(12);
        line-height: px2rem(14);
        margin-top: px2rem(5);
        @include left;
        .slide-contents-book-author-text {
          @include ellipsis2(1);
        }
      }
    }
    .slide-contents-book-progress-wrapper {
      flex: 0 0 px2rem(70);
      .slide-contents-book-progress {
        .progress {
          font-size: px2rem(14);
        }
        .progress-text {
          font-size: px2rem(12);
        }
      }
      .slide-contents-book-time {
        font-size: px2rem(12);
        margin-top: px2rem(5);
      }
    }
  }
  .slide-contents-list {
    padding: 0 px2rem(15);
    box-sizing: border-box;
    .slide-contents-item {
      display: flex;
      padding: px2rem(20) 0;
      box-sizing: border-box;
      .slide-contents-item-label {
        flex: 1;
        font-size: px2rem(14);
        line-height: px2rem(16);
        @include ellipsis;
      }
      .slide-contents-item-page {
        flex: 0 0 px2rem(30);
        font-size: px2rem(10);
        @include right;
      }
    }
  }
  .slide-search-list {
    padding: 0 px2rem(15);
    box-sizing: border-box;
    .slide-search-item {
      font-size: px2rem(14);
      line-height: px2rem(16);
      padding: px2rem(20) 0;
      box-sizing: border-box;
    }
  }
}
</style>
